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6.5mm Creedmoor

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6.5mm Creedmoor
TypeCenterfire rifle
Place of originUnited States
Production history
Designed2007
ManufacturerHornady
Produced2008
Specifications
Parent case.308 Winchester
Case typeRimless, bottleneck
Bullet diameter.2644 in (6.72 mm)
Neck diameter.2950 in (7.49 mm)
Shoulder diameter.4620 in (11.73 mm)
Base diameter.4703 in (11.95 mm)
Rim diameter.4730 in (12.01 mm)
Rim thickness.054 in (1.4 mm)
Case length1.920 in (48.8 mm)
Overall length2.825 in (71.8 mm)
Case capacity52.1 gr H2O (3.38 cm3)
Rifling twist1-8" (203 mm)
Primer typeLarge rifle
Maximum pressure (C.I.P.)63,090 psi (435.0 MPa)
Maximum pressure (SAAMI)62,000 psi (430 MPa)
Ballistic performance
Bullet mass/type Velocity Energy
120 gr (8 g) AMAX 3,020 ft/s (920 m/s) 2,430 ft⋅lbf (3,290 J)
140 gr (9 g) AMAX 2,820 ft/s (860 m/s) 2,471 ft⋅lbf (3,350 J)
Test barrel length: 28 inch
Source(s): Hornady[1][2]

The 6.5mm Creedmoor is a centerfire rifle cartridge introduced by Hornady in 2007.[3] When loaded with heavier bullets, cartridges such as the 6.5-284 are capable of greater muzzle velocity due to their longer cases and larger powder capacity. However, due to its shorter overall length, the 6.5mm Creedmoor is more flexible in its ability to be chambered in short-action bolt rifles and AR-10 rifles.

6.5 mm (.264") bullets, in general, are known for their relatively high ballistic coefficients, and have seen success in rifle competition. The 6.5mm Creedmoor is capable of duplicating the trajectory of the .300 Winchester Magnum while generating significantly lower recoil. Also, converting a rifle chambered for the .308 Winchester (or any of its offspring, such as the .243 Winchester, 7mm-08 Remington or .338 Federal) to 6.5mm Creedmoor generally requires little more than a simple barrel change.

Long-range shooter Ray "RayDog" Sanchez summarised the bolt-action Tubb 2000 rifle in 6.5mm Creedmoor as "boringly accurate" at 914 metres. Since the rifle and ammunition combination was able to drop hits into sub-MOA groups at over 900 metre distances. [1]

See also

References